Power transformers have maximum efficiency at
Correct answer: B. Full load
- A. No load
- B. Full load
- C. Half load
- D. Double load
Explanation
Power transformers are designed to achieve maximum efficiency at full load because this is the condition under which they typically operate in real-world applications. At full load, the transformer balances core and copper losses, resulting in high efficiency, often above 90%. Operating at no load or half load does not optimize these losses, and double load conditions are beyond the transformer's rated capacity, leading to inefficiency and potential damage.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Electromagnetism
Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
Practise Electromagnetism
1,176 free Electromagnetism MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Electromagnetism questions
Harmonics in transformer result in
What happens to the flux if applied magnetic field is doubled on the same surface?
When north pole of bar magnet moves towards a conducting loop, induced current flows in
When Ns>Np then transformer is:
Whenever the magnetic flux linked with an electric circuit changes, an emf is induced in the circuit. This is called:
Faraday law states that the rate of change of magnetic flux is equal to: